20330312313 has 4 divisors (see below), whose sum is σ = 27107083088. Its totient is φ = 13553541540.

The previous prime is 20330312311. The next prime is 20330312363. The reversal of 20330312313 is 31321303302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20330312313 - 2¹ = 20330312311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20330312313.

It is not an unprimeable number, because it can be changed into a prime (20330312311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3388385383 + ... + 3388385388.

It is an arithmetic number, because the mean of its divisors is an integer number (6776770772).

Almost surely, 2^20330312313 is an apocalyptic number.

It is an amenable number.

20330312313 is a deficient number, since it is larger than the sum of its proper divisors (6776770775).

20330312313 is an equidigital number, since it uses as much as digits as its factorization.

20330312313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776770774.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20330312313 its reverse (31321303302), we get a palindrome (51651615615).

The spelling of 20330312313 in words is "twenty billion, three hundred thirty million, three hundred twelve thousand, three hundred thirteen".